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Superfluid helium : untying the tangle.

McClintock, Peter V. E. (1977) Superfluid helium : untying the tangle. Nature, 267 (5610). pp. 395-396. ISSN 0028-0836

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Abstract

The celebrated superfluid properties of helium-4 only exhibit themselves while the liquid is being treated fairly gently. Up to a certain critical velocity it can flow through a tube in a completely frictionless manner, without needing to be pushed to keep it moving. At higher speeds, however, this simple superfluid behaviour disappears abruptly as turbulence is generated and a corresponding flow resistance appears. The resultant turbulent state of the superfluid is of considerable intrinsic interest, particularly in view of the quantum properties of the liquid. A recent paper in Physical Review Letters (38, 551; 1977) by K. W. Schwarz of the IBM Research Centre at Yorktown Heights represents the first serious attempt to tackle the dynamics of the turbulence and, judging by comparisons with experimental data, his theory seems to be remarkahly successful.

Item Type: Article
Journal or Publication Title: Nature
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 33126
Deposited By: Professor P. V. E. McClintock
Deposited On: 04 May 2010 14:19
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 21:52
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/33126

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